.guan-qia {
    background-color: rgb(140 94 25);
    background-image: url(../static/imgs/backgroup.jpg);
    background-repeat: no-repeat;
    background-position-x: center;
    background-position-y: top;
    background-size: cover;
    margin: 0 auto;
    display: block;
    position: relative;
}
